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http://dx.doi.org/10.5352/JLS.2008.18.1.075

Effects of Inhibitors on the Function and Activity of Topoisomerase, and Gene Expression in HL-60 Human Leukemia Cells  

Jeong, In-Cheol (Department of Biochemistry, Kosin University College of Medicine)
Cho, Moo-Youn (Department of Biochemistry, Kosin University College of Medicine)
Park, Jang-Su (Department of Chemistry, College of Natural Science, Pusan National University)
Publication Information
Journal of Life Science / v.18, no.1, 2008 , pp. 75-83 More about this Journal
Abstract
This studies were designed to elucidate whether inhibitors of topoisomerase regulate function and activity of topoisomerase, and gene expression in HL-60 human leukemia cells. HL-60 cells were treated with 10-hydroxycamptothecin or doxorubicin, total RNA was isolated, and expressed genes were investigated with human oligonucleotide microarray containing 10K gene, respectively. Expression profiles of the human leukemia HL-60 cells treated with 10-hydroxycamptothecin (10-CIT) or doxorubicin associated with signal transduction,. cell adhesion, cell cycle, cell growth, cell proliferation, cell differentiation, transcription and immune response, especially genes related with transcription and cell growth. In HL-60 cells treated with 10-CPT, the expression of topoisomerase III${\alpha}$, III${\beta}$ and I gene from oligo chip microarray analysis were increased over, but the expression of topoisomerase II${\alpha}$ and II${\beta}$ gene were decreased over. In contrast, the expression of topoisomerase II${\alpha}$ and II${\beta}$ gene were increased over in HL-60 cells treated with doxorubicin, whereas the expression of topoisomerase III${\alpha}$ and III${\beta}$ mRNA remained no significant change. These results suggest that these data may be useful for novel therapeutic markers.
Keywords
Topoisomerase; 10-hydroxycamptothecin (10-CPT); doxorubicin; expression profile; oligonucleotide microarray;
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